That entire scene was pretty much ad-libbed. I think the only scripted lines were when Angel stood in the hallway and said he wanted some air. From there everything Bobby said was all Mark and Andre. That's why Jack was laughing so hard, it was all real
You're right, I do think it is confirmed for December 20, 2005. It will make a good Christmas present for someone. This was the first movie I ever saw on Imax. I saw it at Brendan theaters located at The Palms in Vegas while on vacation. I would recommend seeing it on Imax. Where I live there is no Imax theater anywhere close.